Stock rim size for 1978 GMC K15 Stepside

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Rusty Nail

Cowboy of both Time and Space
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the other side of the internet
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Russell
Truck Year
1977
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C20
Engine Size
350sbc
Gimmie a break Nell Carter. Obviously a one inch wider wheel will have no effect on fitment. :rolleyes:
Its like "science" for the vaccinated!

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Grit dog

Full Access Member
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The Right side of Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Gimmie a break Nell Carter. Obviously a one inch wider wheel will have no effect on fitment. :rolleyes:
Its like "science" for the vaccinated!

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You’re very confusing to understand.
One post you say it makes a difference next post it doesn’t?
 

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